#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
#define endl '\n'

int book[21];
int a[21];
int n;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    while (cin >> n) {
        int target = 0;
        for (int i = 0; i < n; i++) {
            cin >> a[i];
            target += a[i];
        }
        if (target & 1) {
            cout << "Sorry,I can't!" << endl;
            continue;
        }
        target >>= 1;
        bool flag = false;
        for (int i = 0; i < (1 << n); i++) {
            int k=i;
            for (int j = 0; j < n; j++) {
                book[j] = k & 1;
                k >>= 1;
            }
            int s = 0;
            for (int j = 0; j < n; j++) {
                if (book[j])s += a[j];
            }
            if (s == target) {
                flag = true;
                break;
            }
        }
        if (flag) {
            cout << "Of course,I can!\n";
        } else {
            cout << "Sorry,I can't!\n";
        }
    }
    return 0;
}